Measurements:
°C
°F
CURRENT WEATHER
14:15
Key West
82°F
W 18 mph
Feels like: 86°F
Precip: 0%
World Resorts USA Key West Weather

7 Day Weather Forecast

04.23
thu
DAY
80°F
W 18 mph
precip
0%
NIGHT
78°F
W 16 mph
precip
0%
04.24
fri
DAY
76°F
W 14 mph
precip
100%
NIGHT
78°F
W 14 mph
precip
62%
04.25
sat
DAY
80°F
NW 11 mph
precip
0%
NIGHT
78°F
W 9 mph
precip
0%
04.26
sun
DAY
80°F
NW 9 mph
precip
0%
NIGHT
80°F
W 11 mph
precip
0%
04.27
mon
DAY
82°F
NW 11 mph
precip
0%
NIGHT
80°F
NW 14 mph
precip
0%
04.28
tue
DAY
80°F
NW 11 mph
precip
0%
NIGHT
80°F
NW 14 mph
precip
0%
04.29
wed
DAY
80°F
NW 9 mph
precip
0%
NIGHT
80°F
NW 12 mph
precip
0%

Key West Sea Water Temperature in April, °F

Select Year: 2026 2025 2024

The average sea surface temperature in April 2026 for Key West was 25.5°F. The maximum and minimum values were 24.6°F and 26.4°F respectively.

Key West on the Weather Map

Best Time to Visit Key West
The most sunny months:
May 16 days
March 16 days
April 16 days
The most warm months:
August 91.6 °F
July 91.0 °F
September 89.7 °F
Warmest sea temperature:
August 91.3 °F
July 90.6 °F
September 90.1 °F
The most cold months:
January 74.4 °F
February 76.3 °F
December 78.2 °F
The most rainy months:
June 7 days
August 7 days
September 6 days
The most windy months:
November 14 mph
December 14 mph
January 14 mph
more details